1 Department of Neurosciences, Biomedicine and Movement Sciences, Neurology Unit, University of Verona, Verona, Italy.
2 Department of Biomedical, Metabolic and Neurosciences, Neurology Unit, University of Modena and Reggio Emilia, Nuovo Ospedale Civile Sant'Agostino Estense, Modena, Italy.
3 Department of Diagnostic and Public Health, Infectious Disease Section, University of Verona, Verona, Italy.
4 Laboratory of Neuroimmunology, National Neurological Institute, IRCCS, Mondino Foundation, Pavia, Italy.